ASTROSAT CZTI

Data Quality Report

Orbit 12766

Creation date: 2024-06-27T16:32:23.383354
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A04_112T01_9000001884_12766cztM0_level2.evt modeM0/AS1A04_112T01_9000001884_12766cztM0_level2_quad_clean.evt
Size (bytes)510,917,760117,593,280
Size487.2 MB 112.1 MB
Events in quadrant A3,230,447821,413
Events in quadrant B4,629,392772,848
Events in quadrant C3,084,010794,236
Events in quadrant D4,109,039740,665

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138192
B0177961
C0133691
D0163971

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6189741.195670%
B618967910.971078%
C6189701.131039%
D61894006.463080%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7490 6191 0 0 0.00% 0.00%
B 7490 6191 410 410 5.47% 6.62%
C 7490 6191 24 24 0.32% 0.39%
D 7490 6191 206 206 2.75% 3.33%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 23 130896 838.53 772 757 155.2
A 12 189 73290 467.35 772 757 155.2
A 8 6 29971 188.24 772 757 155.2
B 4 239 1469602 10788.82 728 713 136.1
B 0 85 194763 1425.27 728 713 136.1
B 3 64 37892 273.08 728 713 136.1
C 15 208 243343 1460.81 728 730 166.1
C 13 61 5443 28.38 728 730 166.1
C 8 222 2323 9.59 728 730 166.1
D 1 52 1160746 6842.93 713 694 169.5
D 8 195 85375 499.52 713 694 169.5
D 2 136 84343 493.43 713 694 169.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter